WO2003057371A1 - Discharge electrode - Google Patents
Discharge electrode Download PDFInfo
- Publication number
- WO2003057371A1 WO2003057371A1 PCT/SE2002/002194 SE0202194W WO03057371A1 WO 2003057371 A1 WO2003057371 A1 WO 2003057371A1 SE 0202194 W SE0202194 W SE 0202194W WO 03057371 A1 WO03057371 A1 WO 03057371A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- discharge electrode
- tongue
- tube
- tab
- wall
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/10—Ionising electrode has multiple serrated ends or parts
Definitions
- the present invention relates to a discharge electrode as defined in the preamble of Claim 1, for use in an electrostatic precipitator.
- Electrostatic precipitators are used, for instance to clean dust-laden gases deriving from different types of industrial plants, incinerating plants, and combustion plants.
- An electrostatic precipitator also includes so called collecting electrodes, in addition to discharge electrodes.
- a potential difference is created between the discharge electrodes and the collecting electrodes with the aid of a voltage source, so as to generate an electric field in an area between said electrodes through which the dust-laden gas passes, wherewith the dust particles are caused primarily to settle on the collecting electrodes, so that the gas will be essentially clean of dust as it exits from the precipitator.
- a D.C. voltage wherewith it is endeavoured to border on an electric spark-over, i.e. to obtain the greatest possible electric field strength at which a glow discharge or corona will be achieved, so as to obtain a maximum separation force on the individual dust particles and thereby achieve the best possible gas cleaning effect.
- the electrode element of the discharge electrode so that generation of a glow discharge or corona will be stimulated at the same time as corrosion attack is minimised and good mechanical stability is obtained.
- the design of the electrode element will, conveniently, also be such as to enable the discharge electrodes to be manufactured and handled in a rational fashion. It is also desired that the discharge electrodes will require the minimum of service and will be highly effective.
- An object of the present invention is to provide a discharge electrode with which these desiderata are achieved, said object being realised with a discharge electrode that has the characteristic features set forth in the accompanying claims.
- the design and construction of the iventive discharge electrode is such as to impart thereto a high degree of efficiency and also an extremely good resistance to corrosion.
- the electrode is mechanically stable, simple to install and requires the minimum of maintenance.
- the discharge electrode affords both technical and economical advantages .
- Figure 1 is a perspective view of an inventive discharge electrode
- Figure 2 is a longitudinally sectioned view of the electrode shown in Figure 1.
- the illustrated discharge electrode 1 is constructed from a round tube 2 comprised of an electrically conductive material, for instance, of stainless steel or acid-proof steel, and includes a number of electrode elements or electrode tips 3 that have a corona stimulating function, among other things .
- the electrode elements 3 consist in tongues or tabs 4 bent out from the wall of the tube 2.
- the tongue 4 is punched from the wall 5 of the tube 2 and bent outwards in the manner shown in Figures 1 and 2. Since the tab/tongue 4 is bent outwards, the tongue is punched out from inside the tube by using a punch tool 20, meaning that a tab or tongue 6 will also be punched out on diametrically opposed sides of the tube, as will best be seen from Figure 2.
- the tongue 6 is bent into the tube 2 and does not therefore constitute an outwardly projecting tongue.
- the tongues 4 are bent up at their respective tips, so as to ensure that water droplets, e.g. condensation, will not land on the tips of the electrode elements and therewith jeopardise their efficacy.
- the configuration of the tongues 4 and the sharpness of their edges provide significant advantages from the aspect of corona generation.
- the configuration of the tongue 4 also minimises the risk of dust build-up on the electrode elements 3, in accordance with the inventive concept.
- the discharge electrode 1 shown in Figure 1 has a number of electrode elements 3 which point in four mutually different directions. It will be understood, however, that the number of electrode elements provided and their placement on the tube 2 may be varied as desired, in accordance with requirements.
- the cross-sectional shape of the tube 2 may also be different to that shown, and may, for example, be square instead of round.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002353742A AU2002353742A1 (en) | 2001-11-30 | 2002-11-27 | Discharge electrode |
EP02789119.1A EP1455948B1 (en) | 2001-11-30 | 2002-11-27 | Discharge electrode |
US10/496,383 US7298075B2 (en) | 2001-11-30 | 2002-11-27 | Discharge electrode for use in an electrostatic precipitator and method of manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0104042A SE520901C2 (en) | 2001-11-30 | 2001-11-30 | emission electrode |
SE0104042-7 | 2001-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003057371A1 true WO2003057371A1 (en) | 2003-07-17 |
Family
ID=20286173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2002/002194 WO2003057371A1 (en) | 2001-11-30 | 2002-11-27 | Discharge electrode |
Country Status (5)
Country | Link |
---|---|
US (1) | US7298075B2 (en) |
EP (1) | EP1455948B1 (en) |
AU (1) | AU2002353742A1 (en) |
SE (1) | SE520901C2 (en) |
WO (1) | WO2003057371A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011056142A1 (en) | 2009-11-06 | 2011-05-12 | Meva Innovation Ab | System and process for gasifying biomass |
EP2614894A1 (en) | 2012-01-12 | 2013-07-17 | Envibat AB | Improved wet electrostatic precipitator |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003035263A1 (en) * | 2001-10-23 | 2003-05-01 | Geecom (Pty) Limited | Discharge electrode |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2904153A1 (en) * | 1979-02-03 | 1980-08-07 | Metallgesellschaft Ag | SPRAY ELECTRODE FOR ELECTRIC FILTER |
US4689951A (en) * | 1985-01-08 | 1987-09-01 | Robert Bosch Gmbh | Device for removing solid particles, particularly soot, from exhaust gas of an internal combustion engine |
FR2755882A1 (en) * | 1996-11-19 | 1998-05-22 | Pour Le Dev De L Antipollution | Electrostatic gas filter |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2505907A (en) * | 1946-10-31 | 1950-05-02 | Research Corp | Discharge electrode |
US2694464A (en) * | 1951-02-09 | 1954-11-16 | Research Corp | Electrical precipitator |
DE2057331C3 (en) * | 1970-11-21 | 1974-08-08 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Electrode for an electron tube |
US4126434A (en) * | 1975-09-13 | 1978-11-21 | Hara Keiichi | Electrostatic dust precipitators |
JPS52156473A (en) * | 1976-06-21 | 1977-12-26 | Senichi Masuda | Pulse charge type electric dust collector |
US4352681A (en) * | 1980-10-08 | 1982-10-05 | General Electric Company | Electrostatically augmented cyclone apparatus |
DE3712726A1 (en) * | 1987-04-15 | 1988-11-10 | Metallgesellschaft Ag | SPRAY ELECTRODE |
SE463077B (en) * | 1988-06-03 | 1990-10-08 | Boliden Contech Ab | the emission electrodes |
SE462421B (en) * | 1988-11-04 | 1990-06-25 | Boliden Contech Ab | DEVICE OF WATER ELECTROFILTER |
US5254155A (en) * | 1992-04-27 | 1993-10-19 | Mensi Fred E | Wet electrostatic ionizing element and cooperating honeycomb passage ways |
JP3141995B1 (en) * | 1999-12-03 | 2001-03-07 | 株式会社荏原電産 | Alkaline permanganate solution electrolytic regeneration equipment |
AUPR160500A0 (en) * | 2000-11-21 | 2000-12-14 | Indigo Technologies Group Pty Ltd | Electrostatic filter |
US20050028676A1 (en) * | 2003-08-05 | 2005-02-10 | Heckel Scott P. | Corona discharge electrode assembly for electrostatic precipitator |
-
2001
- 2001-11-30 SE SE0104042A patent/SE520901C2/en not_active IP Right Cessation
-
2002
- 2002-11-27 WO PCT/SE2002/002194 patent/WO2003057371A1/en not_active Application Discontinuation
- 2002-11-27 AU AU2002353742A patent/AU2002353742A1/en not_active Abandoned
- 2002-11-27 US US10/496,383 patent/US7298075B2/en not_active Expired - Lifetime
- 2002-11-27 EP EP02789119.1A patent/EP1455948B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2904153A1 (en) * | 1979-02-03 | 1980-08-07 | Metallgesellschaft Ag | SPRAY ELECTRODE FOR ELECTRIC FILTER |
US4689951A (en) * | 1985-01-08 | 1987-09-01 | Robert Bosch Gmbh | Device for removing solid particles, particularly soot, from exhaust gas of an internal combustion engine |
FR2755882A1 (en) * | 1996-11-19 | 1998-05-22 | Pour Le Dev De L Antipollution | Electrostatic gas filter |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011056142A1 (en) | 2009-11-06 | 2011-05-12 | Meva Innovation Ab | System and process for gasifying biomass |
US9249368B2 (en) | 2009-11-06 | 2016-02-02 | Meva Innovation Ab | System and process for gasifying biomass |
EP2614894A1 (en) | 2012-01-12 | 2013-07-17 | Envibat AB | Improved wet electrostatic precipitator |
Also Published As
Publication number | Publication date |
---|---|
EP1455948B1 (en) | 2015-11-18 |
AU2002353742A1 (en) | 2003-07-24 |
EP1455948A1 (en) | 2004-09-15 |
US7298075B2 (en) | 2007-11-20 |
SE520901C2 (en) | 2003-09-09 |
US20040255784A1 (en) | 2004-12-23 |
SE0104042L (en) | 2003-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5322550A (en) | Electrical dust collector | |
AU2006309419B2 (en) | Single stage electrostatic precipitator | |
EP1629895A1 (en) | Electric dust collector, and air conditioner and air purifier incorporating therein the dust collector | |
KR100241082B1 (en) | Electrostatic dust collecting unit, its production and air cleaner, electrostatic precipitator and black smoke collector using the unit | |
EP2844393B1 (en) | Fluid displacement device | |
KR19980079998A (en) | Electrostatic precipitator and its manufacturing method | |
EP2347829B1 (en) | Dust collecting device | |
EP2039432A1 (en) | Dust collector | |
EP3010644B1 (en) | Gas flow cleaning device | |
EP1629894A1 (en) | Electric dust collector, and air conditioner and air purifier incorporating therein the dust collector | |
US8192536B2 (en) | Dust collector | |
EP1455948B1 (en) | Discharge electrode | |
CH702246A1 (en) | Electrostatic dust filter system, support for an electrode and electrode therefor. | |
AU2001295829B2 (en) | Discharge electrode | |
EP3376117B1 (en) | Filter unit for extractor hood and extractor hood | |
AU2001295829A1 (en) | Discharge electrode | |
WO2000033945A1 (en) | Method and device for cleaning effluents | |
CN211707099U (en) | Multi-stage high-voltage plate type electrostatic field | |
JPH0340352Y2 (en) | ||
JP3033859U (en) | Air cleaner | |
JPH0340355Y2 (en) | ||
JP2835480B2 (en) | Gas purifier | |
KR101953491B1 (en) | Dust collection assembly, air purification device and air conditioner | |
GB1562844A (en) | Electrostatic dust precipitators |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 10496383 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2002789119 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2002789119 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |